Lock for angle-cocks or the like.



PATENTED APR. 7, (1903.- P. H. MOBLEY.

LUCK FOR ANGLE COGKSUR THE'LIKB.

APPLIoATxoN FILED snm'. 29. 1902.

'A vlllllIl-lllllllll UNITED STATES v'PAT-1mi FFICE.

FRANK H.- MOBLEY, OF ALLEGHENY, PENNSYLVANIA.

LOC-K FOR ANG LEiCOCKS OR THE LIKE'.-

sP'nCIFIcAtrIoN forming part of Letters Patent No. r724,912, dated April7, 1903. u Application filed September-29, 1902. Serial No. 125,212. (Nomodel.)

To all whom, t nea/y concern:

Be it known that I, FRANK H. MOBLEY, a citizen of the United' States ofAmerica, residing at Allegheny, in the county of Allegheny and State ofPennsylvania,ghave invented certain new and useful Improvements in Locksfor Angle-Cocks or the Like, of which the following is a speciication,reference being had therein to the accompanying drawings.

This invention relates to certain new and usefulimprovements inangle-cock locks, and while the invention particularly is designed andadapted for use in connection with an angle-cock such as is employed inconnection with air-brakes for railways yet the invention broadly aimsto provide a lock by means of which the plug of the 'valve may be lockedeither in the closed or openposition, whether such valve be in the formof an angle-cock or other style of plug-valve.

In the operation of air-brakes in connection with railway-trains it isthe custom to employ angle-cocks at various points in the airline forthe purpose well known in the art. As either the opening o'r closing ofthese cocks by unauthorized persons is liable to causey adapted toengage with the stem of the plugvalve or with the head of theoperating-handle secured to the said valve in such a manner as to retainthe plug in the open or closed position, according totheposition towhich it has been moved.V

In describing the invention indetail reference is had to the.accompanying drawings,

forming a part of this specitlcatiomand wherein like numerals of4reference indicate like partsthroughout the several views,in which-Figure 1 is a side elevation of the anglecock with myimprovements inposition thereon. Fig. 2 is a central sectional view through thelock-casing, the angle-cock being partly i broken away. Fig. 3 isa topplanview of `a part of the angle-cock, showing the cap or cover plate ofthe lock-casing removed and the operating-key in position for operatingthe lock. Fig.4 is an enlarged detached detail plan 'view ot the lock,the onevside plate thereof being removed. Fig. 5 is an enlarged centrallongitudinal sectional View of the lock, one of the wardsbeing removed.Fig. 6 is an enlarged transverse vertical sectional view on the line 6 6of Fig'. 4. Fig. 7 is an enlarged detail plan view ofi a part of the 1-operatingkey. Fig.- 8 is a side elevation of the anglecock, showing thelock-casing integral with -the valve-casinginstead ot'rdetachabletherefrom.

My improved lock-may be attached to the ordinary angle-cocks or likevalve which are now in use, or the angle-cocksor'valve may be especiallyconstructed in accordance with my invention. With the angle-cocks whichare now in use the lock-casing may be attached to the valve-casing, andwhere the angle-cocks are being constructed in accordance with myinvention the lock-casing may my improved lock direct to the angle-cockalready in use I provide a lock-casing4 .which may be secured to thecasing l by tap-screws As is well known, the plug- 5 or in any othersuitable manner, and I preferably close this casingat its top'by meansof a cap 5', of a similar form of construction to' the cap 6, which isemployed at the lower end of the angle-cock casing. The lock-casing 4 isprovided at one side with a cut-away portion 6', through which theoperating-lever 3 extends and in which slot it operates. Theoperating-lever 3 is fitted onto the stem 2 of the plug-valve, and thehub of this lever is which receives the locking-bolt to hold the IOOlprovided with notches 7 and 8, the latter of plug-valve in the openposition and the former of which receives the locking-bolt to hold Vtheplug-valve in the closed position.

My improved lock comprises a rectangular lock-casing 9, which is heldwithin the casing 4 by small lugs or strips 10, carried on the innerface of the casing 4. Arranged within the casing 9 is a plate 11, whichhas its edge against the upper wall of the casing 9 and carries a pin12, upon which a tumbler 14 is pivotally mounted. This tumbler is at alltimes under the tension of a spring 15, which has its one end engaged inthe tumbler, the other end of said tumbler engaging in the recess in theinner face of the locking-bolt 16. This locking-bolt is hollow at itsupper end to receive the guide-pin 17, carried in the upper wall of thecasing, while the lower end of the locking-bolt projects normally belowthe lower edge of the casing. The throw of the locking-bolt and tumbleris limited by a stoppin 1S. The locking-casing carries a pin 19 toreceive and position the operating-key 20. The ward 21 of this key is soconstructed as to pass the ward 22, carried by the lock-casing, and theplate 23, mounted on top of the tumbler and key, has an additional wardfor the lock.

After the above-described parts of the mechanism have been placed withinthe casing, as seen in Fig. 4,the side plate 23 is placed in positionand is secured by screws passing through and engaging in the oppositeside plate, as iu the usual construction of locks. In Fig. 8 I show alock-casing 4/ integral with the augle-cock casing 1. Where myimprovedlock is to be applied to angle-cocks being constructed, this form may beemployed, and where it is desired to apply the lock to anglecocksalready in use the detachable casing is employed. The casing 4 or 4/ isprovided in its side wall at a point above the slot 6 with a keyhole23', through which the key 20 is inserted, so as to operate the lock.

IVe will assume that the valve is turned to the open position, which isthat shown in the dierent figures of the drawings, and it is desired tounlock the valve and move the same to thel closed position. The operatorinserts the key 2O through the keyhole 23 and engages the key on the pin19. By turning the key the notched corners pass wards 22 and 23,allowing the longer portion of the key to engage with the tumbler 14,raising said tumbler and carrying the locking-bolt 16 therewith, thusremoving said locking-bolt from its engagement in the notch 8. The lever3 may then be moved around at right angles to this former position, andwhen the key is removed from the casing the support for the tumbler 14will have been removed and the spring l5 will force the locking-boltdownwardly to engage in the recess or seat 7 to lock the valve in theclosed position. With the form of lock employed by me it will beobserved that the key serves to hold the tumbler and locking-boltelevated while the lever 3 is being operated, which is of materialadvantage, since the operator may insert the key into the lock, releasethe locking-bolt, and then operate the valve by the same hand, since thekey holds the locking-bolt elevated. As soon as the key is turnedbackward in the opposite direction the locking-bolt is forced downwardlyinto engagement with its notch or recess and against the locking-valve.

While I have herein shown and described a practical form of myinvention, yet it will be noted that various changes may be made in thedetails of construction without departing from the general spirit of myinvention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a lock for angle-cocks, the combination of a valve-casing, avalvemounted therein, an operating-lever secured to the stem of said valve,notches in the hub of said lever, a lock-casing mounted on saidvalve-casing, a guide-pin secured therein, a plate mounted in saidlock-casing,a tumbler pivotally mounted on said plate, a spring mountedon the lock-casing for depressing said tumbler, a locking-bolt mountedin the casing, a recess therein to slidably receive said guide-pin, saidtumbler engaging said locking-bolt to normally depress the same intoengagement with the notches in the operating-lever to lock the same, andmeans for withdrawing the said locking-bolt from locked position,substantially as described.

2. In a lock for angle-cocks, the combination with a valve-casing, avalve mounted therein, an operating-lever secured to the stem of saidvalve, recesses formed in the hub thereof, of alock-casing mounted inthe valvecasing, locking means arranged therein, said means comprising aplate mounted on said lock-casing, a spring-pressed tumbler pivotallymounted thereon, a locking-bolt engaged by said tumbler and operatingthrough said lock-casing, said bolt having a recess therein f or thereception of a guide-pin, a guide-pin mounted in the said casing adaptedto slidably seat in the recess of the locking-bolt, said locking-boltbeing normally depressed byits spring into locking engagement with thenotches of the operating-lever, and means for withdrawing said bolt fromits locked position to permit the turning of said operatinglever,substantially as described.

3. In a lock for angle-cocks and the like, the combination with avalve-casing, a valve therein, an operating-lever connected to the stemof the valve, having recesses formed in the hub thereof, of alock-casing carried by said valve-casing, an opening therein for thereception of a key, alock mechanism arranged therein comprising aspring-pressed tumbler pivotally mounted on a plate secured in said'casing and engaging a locking-bolt, said locking-bolt mounted in thecasing, a guide-pin IOO IIO

therefor adapted to slide in a recess therein, In testimony whereof Iafx my signature said bolt being normally seatedin the recesses in thepresence of two Witnesses.

of the operating-lever to lock the same, and 1 a key adapted to engagewith the tumbler to FRANK H' MOBLEY' raise the bolt out of lockedposition thereby Witnesses:

permitting the turning of the said lever, sub- A. M. WILSON,

stantially as described. WM. F. BRUNNER.

